Altadena, CA
Grapefruit Allergy Blood Test in Altadena, CA
A blood test that measures IgE antibodies to grapefruit to help identify a citrus allergy when eating or handling the fruit triggers symptoms such as itching, hives, or swelling.
Order Grapefruit Allergy Test in Altadena, CA
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Grapefruit Allergy Test- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
This test checks a blood sample for IgE antibodies that target grapefruit proteins. It is used alongside a symptom history when someone reacts to grapefruit or other citrus fruits with itching, hives, or swelling. Results are interpreted by a qualified healthcare provider and are not a stand-alone diagnosis.
About this test in Altadena
An allergy to grapefruit is a form of IgE-mediated food allergy, in which the immune system treats proteins in the fruit as a threat and releases antibodies and histamine. The grapefruit allergy test detects those circulating IgE antibodies in serum. Because reactions to citrus can range from mild oral itching to more significant swelling, the result is reviewed together with the symptoms and timing of exposure.
The sample required is a small venous blood draw, which is analyzed for grapefruit-specific IgE. Laboratories report the antibody level in a standardized unit and usually assign a semiquantitative reactivity class. Some panels also report total IgE and markers of cross-reactivity, since proteins shared between citrus fruits, pollens, and other plant foods can produce positive results without clinical symptoms.
People often order this test after noticing itching, tingling, or hives around the mouth after eating grapefruit or drinking citrus juice. It can also be included when a broader food allergy profile is being assembled. A healthcare provider can combine the laboratory finding with an exposure history to decide what it means for daily eating.
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Frequently Asked Questions
Where can I get a grapefruit allergy blood test in Altadena, CA?
Altadena has certified laboratories and local draw sites that offer this panel. Order online, then choose the collection location and time that suit you.
How much does a grapefruit allergy blood test cost in Altadena?
Self-pay pricing depends on the provider and collection site. The price shown at checkout is the price you pay, with no hidden fees.
How long do results take in Altadena?
Most results are reported within 1-3 business days after collection and are delivered to your secure portal.
Can I collect this sample at home in Altadena?
For select panels, at-home kits can be shipped to Altadena, CA, collected at home, and mailed back in prepaid packaging.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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Every page on this site is reviewed for clarity, sourcing, and accuracy. We update our library as testing options, collection networks, and accreditation standards change.